We’ve seen how expensive silk is – for many years, chemists tried to invent artificial silk that could be mass-produced more cheaply. The first commercial production of artificial silk was in the United States in 1911. This filament fiber was named rayon in 1924.
Rayon is made of cellulose, which is a fibrous chemical found in all plants. Tree bark is made of cellulose, and so are the stringy parts of celery. Some rayon is made from linters, the short cotton fibers left on cottonseeds after ginning.
The cellulose is first chemically treated so that it becomes a liquid solution. The solution is forced through a spinneret, which resembles a high tech showerhead, and into a bath that turns it back into a solid – rayon filaments.